Quote:
Originally posted by DavidB If you start saving $100 per month at age 18, you can easily build an investment worth $1,000,000 or more by the age of 40. Think about it. You can't replace time... grab it while you're young! |
Not to down-play the general message about investing, but technically you would have to be earning an interest rate of more than 24.43% in order to achieve that kind of future value on a $100/month investment.

Unless you're doing risky stock market day-trading, it'll be hard to get a rate like that.
If you earn 5%, it would be $48,000. If you earn 10%, it would be $95,000. Still a nice chunk of cash to supplement your retirement with, though. And it always pays to start investing as early as possible. If you started investing twice as much, $200/month at age 30, you would only end up with $31,000 at 5% or $41,000 at 10% by the time you were 40. Money is more valuable the earlier you can invest it.